"Gearbox architecture ?C the type of gearing used@ the overall gear ratio@ the number of increaser stages@ the number of meshes@ the ratio combinations@ and the gear proportions-- can have a profound effect on the ""package"" size of a wind turbine. In this paper the author applies a common set of requirements to a variety of potential gearbox designs for a 2.0 mW wind turbine and compares the resulting ""geared component"" weights@ gearbox envelope sizes@ generator sizes@ and generator weights. Each design option is also evaluated for manufacturing difficulty via a relative cost estimate."